﻿INDEX. 



Bulletin No. Page. 



Acadia rice, description 1127 6-7 



Acala cotton, spinning tests 1148 2-6 



Accounts — 



live-stock shipping association, description and details. 1150 18-23 

 system for live-stock shipping associations, bulletin by 



Frank Robotka . 1150 1-52 



Aircraft. See Airplane. 

 Airplane — 



construction, faulty design cause of wood failure 1128 13-14 



woods- 

 decays and discolorations, bulletin by J. S. Boyce_ 1128 1-52 



for, drying schedule 1136 38-39 



Airplanes — 



parts, adaptation of different woods 1128 4 



storage, suggestions for prevention of decay 1128 40-42 



Alabama, road building, rock-test results 11 32 2, 51 



(3 8 11 13 



Alfalfa, pasturing with hogs, experiments 1143J '^g' ^y' 2 i 



Aluminum arsenate, composition 1147 13 



Animals, meat, source of vitamin B, bulletin bv Ralph 



Hoagland 1138 1-48 



Apples — 



evaporated, production 1141 2 



evaporation, details 1141 35-45 



freezing points 1133 3,4,5,8 



Apricots — 



dried, production in California-. 1141 2 



evaporation, details 1141 49 



Arizona — 



cotton-fertilization studies 1134 2-68 



road-building rock, tests, results — 1132 3,51 



Arkansas, road-building rock, tests, results 1132 3-4, 46, 51 



Arlington Farm, experiments with borax fertilizers in 1920. 1126 4, 5-17, 25 



Arsenates, toxicity, comparison with arsenites 1147 36-38 



Arsenic — 



oxids, chemical properties, forms, solubility, etc 1147 2-4 



soluble, relation to toxicity of arsenical sprays 1147 42-46 



Arsenicals — 



bases used in preparation 1147 4 



chemical properties, investigations 1147 2-20 



combinations with fungicides and other materials 1147s ,,_ ,« ^1 



commercial and experimental, composition 1147 9-13 



physical properties, investigations 1147 20-23 



properties, chemical, physical, and insecticidal, bulletin 



by F. C. Cook and N. E. Mclndoo 1147 1-58 



sprays, testing on various insects 1147 24-50 



toxicitv, comparative investigations and tests with 



insects 1147 24-50 



Ash, lumber, characteristics 1128 3, 13 



Bales, cotton, types, density, and popularitj' 1135 2-3 



Bananas, freezing points 1133 5,8 



Banding, birds for migration records, practice in Utah 1145 1—3 



Barium arsenate, composition studies 1147 12-13, 24 



78315—24 2 1 



